Refrigerating machine



M. S. GROH REFRIGERAT ING MACHINE Original Filed Feb. 5, 192:2

Znventar,

' Mil y-s.

. Patented Oct. 28, 1924.

A 1,513,105; PATENT oFFlcE.

MELVIN SOLOMON anon, on rononro, ONTARIO, CANADA, ASSIGNOR To :rosnrn MERCADANTE, or NEW YORK, N. Y.

REFRIGERATIN G MACHINE.

Application filed February 3, 1922, Serial No. 533,905. Renewed .Tune. 11, 1924.

To all whom it may concern:

Be it known that I, MELVIN SOLOMON and at less cost than is at presentthe case.

A further object is to so construct the machine that it will be more compact than the present machines wherein the pump and condensing chambers are separate' M invention consists of a refrigerating macliine constructed and arranged all as hereinafter more particularly described and illustrated in the accompanying drawing, in which:

Fig. 1 represents a vertical longitudinal section of a machine constructed according to my invention, and

Fig. 2 is a vertical cross section through the line 2-2 Figure 1.

Like characters of reference indicate cor- 3 responding parts in the difl'erent views.

1 is the, casing provided with the horizontal partition 2 dividing said easing into an upper pum chamber 3 and a lower con- (lensing cham r 4, said casing being open at one end and said open end closed bythe cover plate 5 carryin on its inner face a pump 6 adapted to e inserted into the pump chamber 3. The gears of said pump are driven by the spmdle 7 extending through a stufiing-box or gland 8 in the face plate and the end of said spindle is suitably connected to the shaft 9 of the motor 10.

11 is a return pipe from the refrigerator coils connected at its upper end to the valve 12 which is in turn connected with the inlet 13 communicating with the pump.

14 is a gas pipe extending in the vicinity of the top of the chamber 3 and'the lower and extending in between the double cooling coils 15, which in turn are suitably con nected to a source of water supply, said coils being positioned in the lower or condensing drawing.

chamber 4 is clearly illustrated in the 16 is a pipe leadingfrom the condensing chamber 4 to the refrigerator coils. 17 is a valve communicating with the condensing chamber 4, the end of the pipe 16 being connected therewith. 18 is an oil supply-pipe for the pump extending down from the pump 6 into the oil in the upper chamber 3.

l9 and 20 are lower and upper test pet cocks communicating with the upper cham-. her 3 for testing the level of the oil therein and 21 is a pet cock communicating with the lower chamber 4 for indicating the level of the liquid in the condensing chamber 4.

The operation of the machine is as follows:

The return pipe 11 conveys the gas from the refrigerating coils to the pump 6, said gas being pumped into the chamber 3 by such pump and the pressure in said chamber 3 is built up so that the gas therein is forced through the pipe 14 into the interior of the coils15 in the condensing chamber 4, such cooling coils condensing the gas and permitting the resultant liquid to drop down into the bottom of the chamber from whence it is led'by the pipe 16 back into the refrigerating coils.

The valve 17 is merel a shut of valve for shutting oif the liquid fi'om the refrigerator coils and the valve 12 is a shut 01f valve for the intake to the pump.

Although I have described my machine as constructed with upper and lower chambers formed integrally in one casing it is to be understood that they could with equal fa cility be so constructed in the casing as to be side b side, the particular relation of one cham er .to .the other not being of any importance.

It will be apparent that a machine constructed accordin to my invention will be much more simp e and compact than are the machines at present in use and consequently can be constructed much cheaper, having considerably fewer parts;

What I claim as my invention is.

1. In a refrigerating machine,,a gas tight extend ng into the p p h m e nstia tuted in the casing, said closure plate closing the open side of the casing and said boss having a refrigerant fluid passage-way and a pump drive shaft orifice extending therethrough, and means for establishing communication between the pump and condensing chambers.

extending toward the open side opposite wall, said partition being formed integrally with such wall, a detachable om the closure plate havin an inwardly extending pump supporting. ss formed integrally therewith extending into the pump chamber constituted in the casing, saidclosure plate closing the open side of the casing and engaging the free edge of the horizontal par-- tition, and said boss having a refregerant fluid passage-way and a pump drive shaft orifice extending therethrough,- and means for establishing communication between the pump and condensing chambers. f

MIELVIN sonoiron GROH. 

